The TXE8148 device
provides general purpose parallel input/output (I/O) expansion for
the four wire Serial Peripheral Interface (SPI) protocol and is
designed for 1.65V to 5.5V VCC operation. The SPI
protocol supports standard point-to-point communication along with
daisy-chaining of multiple TXE8148.
The device supports SPI bus frequency of 10MHz
from 1.65V to 5.5V. I/O expanders such as the TXE8148 provide a simple design
when additional I/Os are needed for switches, sensors, push-buttons,
LEDs, fans, and so on.
The TXE8148 has six
I/O ports each with eight IOs per port, which include additional
features designed to enhance the I/O performance in terms of speed,
power consumption and EMI. These features include per I/O
programmable open-drain or push-pull outputs, programmable pullup
and pulldown resistors, bus-hold latchable inputs, maskable
interrupt, interrupt status register, and a fail-safe register mode
which is enabled by the FAIL-SAFE pin.
The TXE8148 device
provides general purpose parallel input/output (I/O) expansion for
the four wire Serial Peripheral Interface (SPI) protocol and is
designed for 1.65V to 5.5V VCC operation. The SPI
protocol supports standard point-to-point communication along with
daisy-chaining of multiple TXE8148.
The device supports SPI bus frequency of 10MHz
from 1.65V to 5.5V. I/O expanders such as the TXE8148 provide a simple design
when additional I/Os are needed for switches, sensors, push-buttons,
LEDs, fans, and so on.
The TXE8148 has six
I/O ports each with eight IOs per port, which include additional
features designed to enhance the I/O performance in terms of speed,
power consumption and EMI. These features include per I/O
programmable open-drain or push-pull outputs, programmable pullup
and pulldown resistors, bus-hold latchable inputs, maskable
interrupt, interrupt status register, and a fail-safe register mode
which is enabled by the FAIL-SAFE pin.